Results 21 to 30 of about 69,338 (279)
FUZZY SEMIGROUPS IN REDUCTIVE SEMIGROUPS [PDF]
Korean Journal of Mathematics, 2013 Summary: We consider a fuzzy semigroup \(S\) in a right (or left) reductive semigroup \(X\) such that \(S(k)=1\) for some \(k \in X\) and find a faithful representation (or anti-representation) of \(S\) by transformations of \(S\). Also we show that a fuzzy semigroup \(S\) in a weakly reductive semigroup \(X\) such that \(S(k)=1\) for some \(k \in X ...
openaire +1 more source
On Epiorthodox Semigroups [PDF]
International Journal of Mathematics and Mathematical Sciences, 2011 It has been well known that the band of idempotents of a naturally ordered orthodox semigroup satisfying the “strong Dubreil‐Jacotin condition” forms a normal band. In the literature, the naturally ordered orthodox semigroups satisfying the strong Dubreil‐Jacotin condition were first considered by Blyth and Almeida Santos in 1992.
Shouxu Du, Xinzhai Xu, K. P. Shum
openaire +2 more sources
A variational principle for free semigroup actions
Advances in Mathematics, 2018 In this paper we introduce a notion of measure theoretical entropy for a finitely generated free semigroup action and establish a variational principle when the semigroup is generated by continuous self maps on a compact metric space and has finite ...
M. Carvalho, F. Rodrigues, P. Varandas
semanticscholar +1 more source
Introducing Fully Up-Semigroups
Discussiones Mathematicae - General Algebra and Applications, 2018 In this paper, we introduce some new classes of algebras related to UP-algebras and semigroups, called a left UP-semigroup, a right UP-semigroup, a fully UP-semigroup, a left-left UP-semigroup, a right-left UP-semigroup, a left-right UP-semigroup, a ...
Iampan Aiyared
doaj +1 more source
ON THE CAYLEY SEMIGROUP OF A FINITE APERIODIC SEMIGROUP [PDF]
International Journal of Algebra and Computation, 2009 Let S be a finite semigroup. In this paper, we introduce the functions φs:S* → S*, first defined by Rhodes, given by φs([a1,a2,…,an]) = [sa1,sa1a2,…,sa1a2 ⋯ an]. We show that if S is a finite aperiodic semigroup, then the semigroup generated by the functions {φs}s ∈ S is finite and aperiodic.
openaire +3 more sources
Mathematical Structures in Computer Science, 2017 A semigroup-based setting for developing Hoare logics and refinement calculi is introduced together with procedures for translating between verification and refinement proofs. A new Hoare logic for multirelations and two minimalist generic verification and refinement components, implemented in an interactive theorem prover, are presented as ...
openaire +2 more sources
Journal of Algebra, 2014 The action of any group on itself by conjugation and the corresponding conjugacy relation play an important role in group theory. There have been several attempts to extend the notion of conjugacy to semigroups. In this paper, we present a new definition of conjugacy that can be applied to an arbitrary semigroup and it does not reduce to the universal ...
João Araújo +2 more
openaire +3 more sources
On the defining equations of the tangent cone of a numerical semigroup ring [PDF]
, 2013 Let a = a 1 … a r be a sequence of positive integers, and let H a denote the semigroup generated by a 1 , … , a r . For an integer k ≥ 0 we denote by a + k the shifted sequence a 1 + k , … , a r + k . Fix a field K .
J. Herzog, Dumitru I. Stamate
semanticscholar +1 more source
Complex Analysis and Operator Theory, 2011 In this paper we consider a semigroup on trigonometric expansions that will be called the Theta semigroup since its kernel is a multiple of the third Jacobi theta function. We study properties of this semigroup and prove that it is a positive diffusion semigroup. We also obtain that its subordinated semigroup is the classical Poisson semigroup.
Urbina, Wilfredo O., Zayed, Ahmed
openaire +2 more sources
On Minimal Fuzzy Ideals of Semigroups
Journal of Mathematics, 2013 The present paper contains the sufficient condition of a fuzzy semigroup to be a fuzzy group using fuzzy points. The existence of a fuzzy kernel in semigroup is explored.
Madad Khan +2 more
doaj +1 more source